Key Stage 3 Asssessment Descriptors - Mathematics

Transcription

1 Level 2 Number 1. Count sets of objects reliably: group objects in tens, twos or fives to count them 2. Begin to understand the place value of each digit, use this to order numbers up to 100: know relative size of numbers to 100, use 0 as a place holder 3. Recognise and continue sequences of numbers, including odd and even numbers: increasing/decreasing in regular steps, counting in tens or twos 4. Know by heart the two, five and ten times tables 5. Begin to use halves and quarters: sharing sweets between 2 or 4, work out halves of numbers to 20, shade half/quarter of a shape etc Calculation 6. Use the knowledge that subtraction is the inverse of addition: 6+8 = 14, 14 8 = 6, 7. Understand halving as a way of undoing doubling and vice versa 8. Use mental recall of subtraction facts to 10: know 7-3 = 4 and use place value to derive = Use mental recall of addition facts to 10: know 3+7 = 10 and use place value to derive = Use mental calculation strategies to solve number problems including those involving money and measures 11. recall doubles to 10+10, double 50p is 1 etc 12. Choose the appropriate operation when solving addition and subtraction problems: repeated addition to solve multiplication problems, repeated subtraction for sharing 13. use repeated addition to solve multiplication problems, repeated subtraction for sharing 14. Solve number problems involving money and measures: add/subtract two-digit and one-digit numbers, using units such as pence, pounds, centimetres 15. Record work in writing: record mental calculations as number sentences 16. Use mathematical names for common 3-D and 2-D shapes: square, triangle, hexagon, pentagon, octagon, cube, cylinder, sphere, cuboid, pyramid 17. Describe their properties, including numbers of sides and corners: edge, face, corner; sort shapes to a single criterion i.e. pentagons, shapes with a right angle etc 18. Describe the position of objects: first, second, third, upside down 19. Distinguish between straight and turning movements: left/right, clockwise/anti clockwise 20. Recognise right angles in turns and understand angle as a measurement of turn: whole turns/half turns/quarter turns 21. Begin to use everyday non-standard and standard units to measure length and mass: hand widths, cm/m/g, read scales to the nearest labelled division 22. Sort objects and classify them using more than one criterion: sort shapes into triangle/not triangle and blue/not blue 23. Understand vocabulary relating to handling data: sort, group, set, list, table, most common, most popular 24. Sort data by counting 25. Understand what a database is. 26. Record and communicate findings, using the simple lists, tables, pictograms and block graphs Level 3 Number 1. Understand place value in numbers to 1000: represent numbers using number lines, 100 squares etc, multiply/divide whole numbers by Recognise negative numbers in contexts such as temperature 3. Recognise a wider range of sequences: multiples of 2, 5, Understand and use simple fractions: ½, ¼, 1/3, 1/5, 1/10 those that are several parts of a whole: ¾, 2/5 5. Recognise some fractions that are equivalent to ½ = 5/10, 2/4

2 Calculation 6. Begin to use decimal notation in contexts such as money: order decimals with one or two dp, know that 3.06 = 306p 7. Know by heart the three, four and six times tables 8. Derive associated division facts from known multiplication facts: if 14 x 5 = 70 then 70 5 = 14 and = 5 9. Begin to understand the role of = when solving balancing problems: 7 x 10 = Add and subtract two-digit numbers mentally: , Use mental recall of addition/subtraction facts to 20 in solving problems involving larger numbers 12. Solve whole number problems including those involving multiplication or division that may give rise to remainders 13. subtract three digit numbers using written methods 14. Add three digit numbers using written method 15. Divide two digit numbers by and 10 with whole numbers and remainders 16. Multiply two digit numbers by 2, 3, 4 or 5 as well as 10 with whole number answers and remainders 17. Classify 3-D and 2-D shapes in various ways using mathematical properties such as reflective symmetry for 2-D shapes 18. Begin to recognise nets of familiar 3-D shapes, e.g. cube, cuboid, triangular prism, square-based pyramid 19. Recognise shapes in different orientations and reflect shapes, presented on a grid, in a vertical or horizontal mirror line or at 45 degrees to the mirror line 20. Describe position and movement: left/right, clockwise/anticlockwise/quarter turns /90degrees to give directions along a route 21. Use standard units in a range of contexts (length, capacity and mass): measure length to nearest ½ cm, read simple scales, read a 12 hour clock 22. Use a wider range of measures: find areas of shapes by counting squares angles as measure of turn, perimeter as a measure of length 23. Gather information: decide what data to collect, make appropriate choice of tally chart, frequency table etc 24. Construct bar charts and pictograms, where the symbol represents a group of units 25. Use Venn and Carroll diagrams to record their sorting and classifying of information: shapes sorted using properties such as right angles and equal sides. 26. Extract and interpret information presented in simple tables, lists, bar charts and pictograms: use keys, read scales, compare data etc Level 4 Number 1. Recognise and describe number patterns: continue sequences involving decimals 2. Recognise and describe number relationships including multiple, factor and square 3. Use place value to multiply and divide whole numbers by 10 or 100: 342 x 10 = Recognise approximate proportions of a whole and use simple fractions/percentages to describe these. 5. Convert mixed numbers to improper fractions and vice versa 6. Begin to understand simple ratio: describing ratio in diagrams Calculations 7. Begin to use simple formulae expressed in words 8. Collect simple terms together, a+a+a, 2a+4a 9. Use and interpret coordinates in the first quadrant 10. Begin to use simple formulae expressed in words 11. Collect simple terms together, a+a+a, 2a+4a 12. Use and interpret coordinates in the first quadrant 13. Use the properties of 2-D and 3-D shapes: recognise most quadrilaterals, all triangles, oblique lines of symmetry, use terms horizontal, vertical, congruent 14. Reflect simple shapes in a mirror line: at 45 degrees to the mirror line, begin to use

3 the distance of vertices from mirror line to reflect more accurately 15. Translate shapes horizontally or vertically and begin to rotate a simple shape or object about its centre or a vertex 16. Interpret, with appropriate accuracy, numbers on a range of measuring instruments: measure to within 2mm, measure acute and obtuse angles to nearest 5 degrees 17. Find areas by counting squares and part squares 18. Find perimeters of simple shapes. 19. Collect, record and group discrete data: test a hypothesis about the frequency of an event (how many 6s in 50 throws of a die), record using frequency table 20. Continue to use Venn and Carroll diagrams to record their sorting and classifying of information: sorting numbers multiples of 8 and multiples of Construct and interpret frequency diagrams and simple line graphs: scale on bar graphs reading between the labelled divisions etc 22. Understand and use the mode and range to describe sets of data 23. Understand the language of probability: more likely, equally likely, fair, unfair, certain etc Level 5 Number 1. Use understanding of place value to multiply and divide whole numbers and decimals by 10, 100 and 1000 and explain the effect: 2.6 x 1000 : Round decimals to the nearest decimal place and order negative numbers in context: = 38.5 to 1 d.p. 3. Recognise and use number patterns and relationships: say whether much larger numbers will be in the sequence or not 4. Use equivalence between fractions and order fractions and decimals: convert fractions such as 2/5 into tenths or hundredths/express as decimals or percentages 5. Reduce a fraction to its simplest form by cancelling common factors: 16/20 = 8/10 = 4/5 6. Collect algebraic terms together, solve linear equations with one operation 7. construct and use simple formula involving one or two operations 8. Use and interpret coordinates in all 4 quadrants. Calculations 9. Use known facts, place value, knowledge of operations and brackets to calculate including using all four operations with decimals to two places 10. Use a calculator where appropriate to calculate fractions/percentages of quantities/measurements: 3/8 of 400g or 60% of Understand and use an appropriate non-calculator method for solving problems that involve multiplying and dividing any three digit number by any two-digit number 12. Solve simple problems involving ordering, adding, subtracting negative numbers in context 13. Solve simple problems involving ratio and direct proportion: use multiplication rather than trial and error 14. Apply inverse operations and approximate to check answers to problems are of the correct magnitude 15. Use a wider range of properties of 2-D and 3-D shapes: name quadrilaterals, recognise right angled, equilateral, isosceles etc parallel, perpendicular, no. of faces/vertices 16. Identify all the symmetries of 2-D shapes: reflective, rotational etc 17. Use language associated with angle and know and use the angle sum of a triangle and that of angles at a point: acute, obtuse, reflex: triangle 180 : point Reason about position and movement and transform shapes: visualise 3D shapes from nets; transfer patterns from shapes to nets, draw shapes with given lines of symmetry 19. Measure and draw angles to the nearest degree, when constructing models and drawing or using shapes 20. Read and interpret scales on a range of measuring instruments, explaining what each

4 labelled division represents: thermometer, scales, measuring cylinder, ruler etc 21. Solve problems involving the conversion of units and make sensible estimates of a range of measures in relation to everyday situations 22. Understand and use the formula for the area of a rectangle and distinguish area from perimeter: find length given perimeter and width/find area/perimeter of simple L shapes 23. Understand and use the probability scale from 0 to 1: 0-impossible, 1-certain, 0.5- equally likely, 0.2-unlikely, etc 24. Understand and use the mean of discrete data and compare two simple distributions, using the range and one of mode, median or mean 25. Understand that different outcomes may result from repeating an experiment: rolling a die 36 times may give different no of sixes rolled but probability stays 1 in Interpret graphs and diagrams, including pie charts and line graphs (where the intermediate values have meaning), and draw conclusions Level 6 Number 1. Understand and use proportionality Calculation 2. Calculate the result of any proportional change using multiplicative methods 3. add and subtract fractions 4. multiply and divide fractions 5. Understand the effects of multiplying and dividing by numbers between 0 and 1, 6. Make and justify estimates and approximations of calculations; estimate calculations by rounding numbers to one significant figure and multiplying and dividing mentally 7. Use a calculator efficiently and appropriately to perform complex calculations with numbers of any size, knowing not to round during intermediate steps of a calculation 8. Square a linear expression and expand and simplify the product of two linear expressions of the form (x ± n) and simplify the corresponding quadratic equation 9. Use algebraic and graphical methods to solve linear equations in two variables 10. Solve inequalities in one variable and represent the solution set on a number line 11. Use formulae from mathematics and other subjects; substitute numbers into expressions and formulae; 12. derive a formulae and, in simple cases, change its subject 13. Find the next term and nth term of quadratic sequences and functions and explore their properties 14. Use and interpret coordinates in the first quadrantplot graphs of simple quadratic and cubic functions, e.g. y = x², y = 3x² + 4, y = x³ 15. Understand and apply Pythagoras theorem when solving problems in 2D 16. Calculate lengths, areas and volumes in plane shapes and right prisms 17. Enlarge 2D, given a centre of enlargement and a fractional scale factor, on paper and using ICT; recognise the similarity of the resulting shapes 18. Find the locus of a point that moves according to a given rule, both by reasoning and using ICT 19. Recognise that measurements given to the nearest whole unit may be accurate by up to one-half of the unit in either direction 20. Understand and use measures of speed (and other compound measures such as density or pressure) to solve problems 21. Suggest a problem to explore using statistical methods, frame questions and raise conjectures; identify possible sources of bias and plan how to minimise it 22. Select, construct and modify, on paper/using ICT suitable graphical representation to progress an enquiry including frequency polygons and lines of best fit on scatter graphs 23. Estimate the mean, median and range of a set of grouped data and determine the modal class, selecting the statistic most appropriate to the line of enquiry 24. Compare two or more distributions and make inferences, using the shape of the

5 distributions and measures of average and range 25. Understand relative frequency as an estimate of probability and use this to compare outcomes of an experiment 26. Examine critically the results of a statistical enquiry, and justify the choice of statistical representation in written presentation Level 7 Number 1. Understand and use proportionality Calculation 2. Calculate the result of any proportional change using multiplicative methods 3. add and subtract fractions 4. multiply and divide fractions 5. Understand the effects of multiplying and dividing by numbers between 0 and 1, 6. Make and justify estimates and approximations of calculations; estimate calculations by rounding numbers to one significant figure and multiplying and dividing mentally 7. Use a calculator efficiently and appropriately to perform complex calculations with numbers of any size, knowing not to round during intermediate steps of a calculation 8. Square a linear expression and expand and simplify the product of two linear expressions of the form (x ± n) and simplify the corresponding quadratic equation 9. Use algebraic and graphical methods to solve linear equations in two variables 10. Solve inequalities in one variable and represent the solution set on a number line 11. Use formulae from mathematics and other subjects; substitute numbers into expressions and formulae; 12. derive a formulae and, in simple cases, change its subject 13. Find the next term and nth term of quadratic sequences and functions and explore their properties 14. Use and interpret coordinates in the first quadrantplot graphs of simple quadratic and cubic functions, e.g. y = x², y = 3x² + 4, y = x³ 15. Understand and apply Pythagoras theorem when solving problems in 2D 16. Calculate lengths, areas and volumes in plane shapes and right prisms 17. Enlarge 2D, given a centre of enlargement and a fractional scale factor, on paper and using ICT; recognise the similarity of the resulting shapes 18. Find the locus of a point that moves according to a given rule, both by reasoning and using ICT 19. Recognise that measurements given to the nearest whole unit may be accurate by up to one-half of the unit in either direction 20. Understand and use measures of speed (and other compound measures such as density or pressure) to solve problems 21. Suggest a problem to explore using statistical methods, frame questions and raise conjectures; identify possible sources of bias and plan how to minimise it 22. Select, construct and modify, on paper/using ICT suitable graphical representation to progress an enquiry including frequency polygons and lines of best fit on scatter graphs 23. Estimate the mean, median and range of a set of grouped data and determine the modal class, selecting the statistic most appropriate to the line of enquiry 24. Compare two or more distributions and make inferences, using the shape of the distributions and measures of average and range 25. Understand relative frequency as an estimate of probability and use this to compare outcomes of an experiment 26. Examine critically the results of a statistical enquiry, and justify the choice of statistical representation in written presentation Level 8 Number 1. Understand the equivalence between recurring decimals and fractions Calculation 2. Use fractions to solve problems. 3. Use fractions or percentages to solve problems involving repeated proportional

6 changes or the calculation the original quantity given the result of a proportional change 4. Use standard form 5. Solve problems involving calculating with powers, roots, checking for correct order of magnitude and using a calculator as appropriate 6. understand fractional indicies and negative indicies (with 1 as the numerator) 7. Use fractions to solve problems. 8. Use fractions or percentages to solve problems involving repeated proportional changes or the calculation the original quantity given the result of a proportional change 9. Use standard form 10. Solve problems involving calculating with powers, roots, checking for correct order of magnitude and using a calculator as appropriate 11. understand fractional indicies and negative indicies (with 1 as the numerator) 12. Use fractions to solve problems. 13. Use fractions or percentages to solve problems involving repeated proportional changes or the calculation the original quantity given the result of a proportional change 14. Use standard form 15. Solve problems involving calculating with powers, roots, checking for correct order of magnitude and using a calculator as appropriate 16. understand fractional indicies and negative indicies (with 1 as the numerator) 17. Draw a cumulative frequency curve 18. Estimate and find the median, quartiles and inter-quartile range for large data sets, 19. Compare two or more distributions and make inferences, using the shape of the distributions and measures of average and spread including median and quartiles 20. Know when to add and when to multiply two probabilities 21. Use tree diagrams to calculate probabilities of combinations of independent events